Multiple unit loose-leaf book



March 4, 1941- F. D. PITT ET Ar. 2,233,898

` MULTIPLE UNIT LOOSE-LEAF BOOK Filed July 2, 1937 I (03@ @LL- GttornegPatented Mar. 4, 1941 UNITED STATES MULTIPLE UNIT LOOSE-LEAF BOOKFrederick D. Pitt and R Mo., assignors, by

oy T. Jones, Kansas City, mesne assignments, to

Wilson-J ones Company, Chicago, Ill., a corpora-v tion of MassachusettsApplication July 2, 1

`1 claim.

Our invention relates to improvements in multiple unit loose leaf books.It relates to loose leaf books of the type in which the leaves areremovably retained by a supporting unit which serves as the back of thebook.

It is adapted for use with a loose leaf book of the type provided withcooperating ring hooks which are removably insertible throughperforations in the loose leaves.

One of the objects of our invention is the provision of a novel multipleunit loose leaf book to which additional units may be easily and quicklyadded, and which vpermits of the easy and quick detachment of one ormore units.

Another object of our invention is the provision of a novel multipleunit loose leaf book in which the units are hingedly detachablyconnected with each other.

A further object oi our invention is the provision of a novel multipleunit loose leaf book which will have a minimum of thickness.

Another objectA of our invention is the provision of a novel multipleunit loose leaf book, each unit of which is provided with cooperatinghooks which move to and from a leafrelease position and hook separatingmeans that prevent the hooks of adjacent units interfering with theproper operation of the hooks of a unit with respect to which looseleaves are to be added or removed.

Still another object of our invention is the provision of a novel looseleaf book of the kind described, which is simple, cheap to make, strong,durable, not likely to get out of order, and which is efficient in itsoperation.

The novel features of our invention are hereinafter fully described andclaimed.

Fig. 1 is a view, partly broken away, of a form embodying the inventionin which the pair of cooperating ring hooks of adjacent units are instaggered relation, and the hooks of adjacent units, in the closedposition, overlap each other, the separating members being perforatedfor receiving adjacent hooks.

Fig. 2 is a plan view of one of the separating members of the form shownin Fig. 1.

Fig. 3 is an end view of what is shown in Fig. l.

Fig. 4 is an enlarged section on the line 4-4 of Fig. 3.

Fig. 5 is a plan view of parts of a hinge back member and the springback, of one of the units shown in Fig. 1, and the fastening meansconnecting said elements.

Fig. 6 is a section on the line 6-6 of Fig. 5.

Similar characters of reference designate similar parts in the differentviews.

In the form of our invention shown in Figs. l to 6, which is provided toobtain a ring book with a minimum of thickness, the units A', B and Care similar in construction to each other. Two book covers 20 and 2| arerespectively provided With hinge plates 22 and 23 having barrels 24 and25 disposed respectively between and aligned with barrels 2 at the outerlongitudinal edges of the hinge back members I. Two pintles 26 and 21are removably extended through the aligned barrels 2, 24 and 25, thushinging the covers 20 and 2| to the units A' and C'.

The hinge back member I is flat, and, as shown in Figs. 5 and 6,isprovided with inverted U shaped projections I3', which extend throughholes I5 provided in the spring back plate 4, a fastening pin I6 beingremovably inserted under and against the projections I3 and resting onthe plate 4. l

As shown in Figs. 1 and 4, the units A', B' and C' are disposed instaggered relation to each other, with the pairs of adjacent hooks IIJof adjacent units in staggered relation to and, in the closed position,overlapping each other, as shown. l The hooks I0 respectively extendthrough slots II provided in the longitudinal edges of the cover plates8. l

The separating members I8', are respectively releasably hinged to thepintles Il between the pairs of adjacent units. Pintle-engaging barrelsI9 are provided on one longitudinal edge of each member I8'. Each memberI8' is provided therethrough with holes 28 for respectively receivingadjacent hooks of adjacent units, when the hooks are in the closedposition. This overlapping of the hooks I0, when closed, enables thebook to be of less thickness, for like sized ring hooks, than would bepossible with any other structure.

When it is desired to add another unit to the three units A', B', C'shown in Figure 3, a unit similar to one of these units is provided.This additional unit is provided with a hook separating member I8'.

The left cover 2I is removed by detaching the pintle 21 from the leftferrule 2 of the unit` C', and the new unit with its separating memberI8' is substituted, the right ferrule 2 of the new unit engaging theleft ferrule 2 of the unit C' by means of the pintle I1, on which isalso mounted the separating member I8'. The cover 2I is then attached tothe left ferrule 2 of the new unit by means of the pintle 21, therebyproviding a four unit ring book. Additional units may be similarly addedin the manner described. By reversing the operation, units may bedetached from the ring book.

, To properly offset the hooks I0 of the added unit with respect to theadjacent hooks III of the unit to which the new unit is attached, thespring back plate 4 of the added unit, is made longitudinally adjustableon the hinge back member I', as for that matter are the spring backplates 4 of each of the units.

For effecting such longitudinal adjustment of the spring back plate 4,as shown in Figs. 1 and 5, the plate 4 adjacent to each end is providedWith a longitudinal row of holes I5, four in number, arranged in pairsproperly spaced for receiving therethrough the two adjacent inverted yUshaped projections I3 of the hingeI back member I', two pairs of suchprojections being provided on the hinge back member adjacent to its endsrespectively.

As shown in Fig. 5, by withdrawing the pin I6, the plate 4 may beadjustedy toward the adjacentend of the member I', and the projectionsI3 of the latter extended through the second and fourth holes I5, andheld in that position by inserting the fastening pin I6 under theproposition occupied by the unit C', Fig. 1, or it may be disposed inthe position of the unit B', to adapt it to cooperative relationshipwith the particular unit to which it is to be attached.

With the employment of the means hereinbefore described for attachingthe loose leaf holders to the back member I', each of said holders, byremoving the fastening devices comprising the pins I B, may be detachedindependently of the others, without disassemblage of its parts orleaves held thereby, and without disconnecting the hinging meansconnecting the back members I with each other.

It will be noted, that as shown, each ring hook loose leaf unit hasmeans for attaching it to the adjacent back member I' at a pointbetween, spaced from, and independent of the longitudinal hinged edgesof the back member. By means of this construction the loose leaf ringhook unit can be detached and another substituted for it withoutdisassembling the book back members I' from each other.

This is a desirable function, as often it is desired to remove a ringhook unit for use independently of the book.

This means of attaching the ring hook units to thebook back members alsopermits the ring hooks to' be opened without interference by the hingedbarrels at opposite sides thereof.

Other modifications of our invention, Within the scope of the appendedclaim, may be made without departing from the spirit .of our invention.

What we claim is:

In a multiple unit4 ring book of the .kind described, two similar unitsdisposed parallel with each other1 and comprising each a back member,cooperating ring hooks, and means on said back member by which saidhooks are supported so as to open and close transversely to said backmember, said hooks of one of said units being in staggered relation tothe hooks of the other unit with the hooks of one unit adjacent to thehooks of the otherY unit overlapping each other in the closed position,means hinging together the adjacent longitudinal edges of said backmembers, and a separating member hinged to said back members by saidhinging means and disposed between the adjacent hooks of the two unitsand having therethrough holes for respectively receiving therethroughportions of adjacent hooks of adjacent units, when the hooks are in theclosed position.

FREDERICK D. PITT. ROY T. JONES.

